I am using bluetooth serial to read obd data from a car and this task is running on core zero. Core 1 shows the data. This all works as expected. When I get user input on a rotary encoder I want to pause the bluetooth task on core zero, do some settings work, when the settings work is over I want to...

Hi,

Are arduino functions like delay, millis, digitalRead, digitalWrite etc "thread safe".

Can I have code that runs on both cores both use these functions?

Thanks!